Refactor CsvExporterTests.cs to remove unnecessary variables and update method call

CodeLineCounter.Tests/CsvExporterTests.cs

@@ -59,14 +59,11 @@ public void ExportToCsv_NullData_ThrowsNullReferenceException()
         {
             // Arrange
             string filePath = "test3.csv";
-            List<NamespaceMetrics> namespaceMetrics = null;//new List<NamespaceMetrics>();
-            Dictionary<string, int> projectTotals = null;
             int totalLines = 0;
-            List<DuplicationCode> duplicationCodes = null;
-            string? additionalInfo = null;
 
             // Act & Assert
-            Assert.Throws<NullReferenceException>(() => CsvExporter.ExportToCsv(filePath, namespaceMetrics, projectTotals, totalLines, duplicationCodes, additionalInfo));
+            #pragma warning disable CS8625 
+            Assert.Throws<NullReferenceException>(() => CsvExporter.ExportToCsv(filePath, null, null, totalLines, null, null));
         }
 
         [Fact]

CodeLineCounter/Services/CodeAnalyzer.cs

@@ -96,9 +96,11 @@ public static void AnalyzeSourceCode(Dictionary<string, int> projectNamespaceMet
         {
             currentNamespace = null;
             fileLineCount = 0;
-            fileCyclomaticComplexity = 0;
 
-            var tree = CSharpSyntaxTree.ParseText(File.ReadAllText(file));
+            // lines variable should contain all source code lines
+            string sourceCode = string.Join(Environment.NewLine, lines);
+            var tree = CSharpSyntaxTree.ParseText(sourceCode);
+
             var compilation = CSharpCompilation.Create("CodeAnalysis", new[] { tree });
             var model = compilation.GetSemanticModel(tree);
 

generate-covertura.cmd

@@ -1,6 +1,6 @@
  rem echo off
  echo
  rem - remove older test results
-rmdir /s /q CodeLineCounter.Tests\TestResults
+if exist rmdir /s /q CodeLineCounter.Tests\TestResults
  rem - collect code coverage
 dotnet test --collect:"XPlat Code Coverage;Format=json,lcov,cobertura"  --results-directory CodeLineCounter.Tests\TestResults --logger trx;LogFileName=testresults.trx